An automatic threading and winding mechanism

Abstract

The utility model discloses a kind of automatic threading winding mechanism, it is related to wire cutting equipment technical field, the automatic threading winding mechanism, including arc support, both ends of each group arc support are equipped with belt pulley, and transmission belt around roller is equipped between belt pulley, fixed needle is equipped on the side of the travel track of transmission belt, spacing adjustment component is equipped in at least one side of arc support, for driving fixed needle moves along roller axial direction. By using transmission belt as driving source, drive fixed needle to rotate around roller circumferentially, automatically thread diamond wire around roller, and after winding a circle, based on the drive of spacing adjustment component, drive diamond wire to next circle wiring, and then according to this kind of operating state, automatically wire diamond wire on roller, it not only can provide diamond wire spacing adjustment for the control of spacing accuracy, simultaneously its wiring stroke covers entire roller slotting position, can adapt to the wiring width requirement of different material size.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting equipment, and in particular to an automatic wire threading and winding mechanism. Background Technology

[0002] Wire EDM is suitable for cutting various hard and brittle materials, including multi-wire EDM and single-wire EDM. Wire EDM is a new type of cutting process that uses the high-speed reciprocating motion of a metal cutting wire to bring the material into the processing area for cutting. It can simultaneously cut hard and brittle materials such as semiconductors, crystalline silicon, rare earth permanent magnets, and stone into several thin slices at one time.

[0003] The wire EDM process involves repeatedly winding a diamond wire around three or four sets of rollers. The high-speed rotation of the rollers drives the diamond wire to move at high speed, which then comes into contact with the material being cut. The high-speed relative motion generates cutting force, thereby cutting the material to the required thickness.

[0004] Before cutting, diamond wire needs to be wound multiple times around the roller at the same spacing. Currently, this is mainly done manually, with the winding and spacing adjusted, which can take anywhere from tens of minutes to several hours. Existing patents, such as Chinese Patent CN222891494U, disclose an automatic winding device and a multi-wire cutting machine. These devices drive the roller body and wire guide component to rotate, winding the steel wire into a groove. A switching component controls the movement of the wire guide component, which in turn moves the steel wire, thus changing the groove the wire is wound into. This eliminates manual operation and improves efficiency. However, this solution cannot automatically adjust the wire spacing, and the wire length cannot cover the entire roller shaft. It is also unsuitable for four-axis large-scale stone multi-wire cutting machines. Therefore, those skilled in the art have provided an automatic wire threading and winding mechanism to solve the problems mentioned in the background. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic threading and winding mechanism, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic threading and winding mechanism, comprising a cutting frame and four sets of rollers arranged circumferentially around the cutting frame, further comprising: an arc-shaped bracket, wherein two sets of arc-shaped brackets are arranged in opposite directions on both sides of the rollers, wherein each set of arc-shaped brackets has pulleys at both ends, and a transmission belt is provided between the pulleys around the rollers; a fixed needle, wherein the fixed needle is located on one side of the travel track of the transmission belt, and is used to pull the diamond wire around the rollers circumferentially; and a spacing adjustment component, wherein the spacing adjustment component is located on at least one side of the arc-shaped brackets, and is used to drive the fixed needle to move axially along the rollers, so that after the fixed needle pulls the diamond wire around the current roller's groove for one revolution, it pushes the diamond wire to the next set of grooves for winding.

[0007] As a further technical solution of this utility model: one end of one of the bow-shaped brackets is provided with a second motor near the pulley, the output shaft of the second motor is provided with a driving gear, one end of the central shaft of the pulley is provided with a driven gear, and the driving gear and the driven gear are meshed and connected.

[0008] As a further technical solution of this utility model: the belt surface of the transmission belt is provided with a fixing plate, wherein a fixing needle is fixedly connected to one side of the fixing plate, a photoelectric sensor is fixedly connected to the other side of the fixing plate, and a photoelectric sensor mounted on an arc-shaped bracket is provided on the travel trajectory of the photoelectric sensor.

[0009] As a further technical solution of this utility model: the spacing adjustment component is provided in two sets, respectively located on both sides of the two sets of bow-shaped supports. The spacing adjustment component includes: a lead screw, which is located in the middle of the bow-shaped support and acts to advance the bow-shaped support; and a guide rail, which is provided in two sets, respectively located at both ends of the bow-shaped support and acts to guide the movement of the bow-shaped support.

[0010] As a further technical solution of this utility model: the middle part of the bow-shaped bracket is provided with a thread sleeve adapted to the lead screw, and a first motor installed on the cutting frame is provided at one end of the lead screw.

[0011] As a further technical solution of this utility model: the two ends of the bow-shaped bracket are provided with slides adapted to the guide rail.

[0012] This utility model provides an automatic threading and winding mechanism, which has the following advantages compared with the prior art: This automatic threading and winding mechanism uses a transmission belt as a drive source to rotate a fixed needle around the roller circumferentially, automatically threading the diamond wire around the roller. After one winding, the diamond wire is driven to the next winding based on the spacing adjustment component. This process is repeated to automatically lay the diamond wire on the roller. It not only provides precise control over the spacing when adjusting the diamond wire spacing, avoiding misalignment of the diamond wire caused by motion errors during the laying process, but also covers the entire slotted position of the roller, adapting to the wiring width requirements of different material sizes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of an automatic threading and winding mechanism. Figure 2 This is a schematic diagram of the first wiring drive for an automatic threading and winding mechanism. Figure 3 This is a schematic diagram of the second wiring drive for an automatic threading and winding mechanism. Figure 4 An automatic threading and winding mechanism Figure 2 Enlarged view of point A in the middle; Figure 5 An automatic threading and winding mechanism Figure 2 Enlarged view of point B in the middle; Figure 6 An automatic threading and winding mechanism Figure 2 Enlarged view of point C in the middle; Figure 7 An automatic threading and winding mechanism Figure 3 Enlarged view of point D in the middle.

[0014] In the diagram: 1. Cutting frame; 2. Roller roller; 3. Guide rail; 4. Lead screw; 5. Bow-shaped bracket; 6. Transmission belt; 7. First motor; 8. Slide table; 9. Lead sleeve; 10. Second motor; 11. Pulley; 12. Drive gear; 13. Driven gear; 14. Photoelectric sensor; 15. Photoelectric sensor contact; 16. Fixing plate; 17. Fixing needle. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-7This utility model provides a technical solution for an automatic threading and winding mechanism: an automatic threading and winding mechanism includes a cutting frame 1 and four sets of rollers 2 arranged circumferentially around the cutting frame 1, and two sets of bow-shaped supports 5 arranged in opposite directions on both sides of the rollers 2. Each set of bow-shaped supports 5 has pulleys 11 at both ends, and a transmission belt 6 is arranged between the pulleys 11 around the rollers 2. A fixed needle 17 is provided on one side of the travel path of the transmission belt 6 for pulling diamond wire around the rollers 2 for circumferential wiring. Furthermore, one end of one set of bow-shaped supports 5 is equipped with a second motor 10 near the pulleys 11. The output shaft of the second motor 10 is equipped with a drive gear 12, and one end of the central shaft of the pulley 11 is equipped with a driven gear 13. The drive gear 12 and the driven gear 13 are meshed and connected. By controlling the operation of the second motor 10, the drive gear 12 is driven to rotate. The meshing transmission between the drive gear 12 and the driven gear 13 generates a driving force acting on one set of pulleys 11. Then, under the tension of the other pulleys 11, the transmission belt 6 is driven to rotate around the roller roller 2, pushing the fixed needle 17 to wind the thread around the roller roller 2. By fixing the diamond wire to the fixed needle 17 in advance, the diamond wire is driven to automatically thread around the roller roller 2.

[0017] As a further embodiment, the belt surface of the transmission belt 6 is provided with a fixing plate 16, wherein a fixing needle 17 is fixedly connected to one side of the fixing plate 16, and a photoelectric sensor 15 is fixedly connected to the other side of the fixing plate 16. A photoelectric sensor 14 is installed on the bow-shaped bracket 5 on the travel trajectory of the photoelectric sensor 15. Through the arrangement of the photoelectric sensor 15 and the photoelectric sensor 14, when the transmission belt 6 drives the photoelectric sensor 15 to rotate one revolution, it passes through the photoelectric sensor 14, triggering the photoelectric sensor, controlling the fixing needle 17 to move to the groove of the next set of roller rollers 2, and automatically threading the diamond wire along the axial direction of the roller rollers 2.

[0018] Furthermore, two sets of spacing adjustment components are provided on both sides of the two sets of bow-shaped brackets 5, which are used to drive the fixed needle 17 to move axially along the roller roller 2, so that the fixed needle 17 pulls the diamond wire to run around the wire groove of the current roller roller 2 once, and then pushes the diamond wire to run in the next set of wire grooves. Specifically: The spacing adjustment assembly includes a lead screw 4 located in the middle of the bow-shaped bracket 5, and a wire sleeve 9 adapted to the lead screw 4 in the middle of the bow-shaped bracket 5. A first motor 7 mounted on the cutting frame 1 is located at one end of the lead screw 4. At the same time, guide rails 3 are provided at both ends of the bow-shaped bracket 5, and slide tables 8 adapted to the guide rails 3 are provided at both ends of the bow-shaped bracket 5. After the diamond wire is laid in one circle, the first motor 7 can be controlled to work, driving the lead screw 4 to rotate and pushing the bow-shaped bracket 5 to slide along the track direction of the guide rail 3. Then, the transmission belt 6 is pushed to move axially along the roller roller 2. During the operation of the transmission belt 6, the fixed needle 17 is moved synchronously, moving the diamond wire on the fixed needle 17 to the next set of wire slots of the roller roller 2 for automatic wire threading. Then, in this manner, the wire is laid continuously until the slots of the roller roller 2 that need to be arranged are filled.

[0019] The working principle of this utility model is as follows: When the diamond wire is laid on the roller 2, the diamond wire can be wound and fixed to the fixed needle 17 in advance. Then, by controlling the second motor 10 as the driving source, the driving force acting on one of the pulleys 11 is generated under the meshing transmission of the driving gear 12 and the driven gear 13. Then, under the tension of the other pulleys 11, the transmission belt 6 is driven to rotate around the roller 2, and then the diamond wire on the fixed needle 17 is wound around the roller 2. When the diamond wire has wound around the roller 2 once, the photoelectric sensor 15 triggers the photoelectric sensor 14 through the photoelectric sensor 14, generating a control signal to drive the first motor 7. At this time, the first motor 7 is controlled as the driving source to drive the lead screw 4 to rotate, push the bow-shaped bracket 5 to slide along the axial direction of the roller 2, and then push the transmission belt 6 to move along the axial direction of the roller 2, driving the fixed needle 17 to move to the next set of wire grooves of the roller 2. Then, in this manner, the wire is continuously laid out, and the grooves that need to be arranged on the entire roller 2 can be filled. In addition to the above, during the diamond wire wiring process, when a wire break occurs (the traditional method is to reconnect the broken wire and then manually adjust the disordered wiring spacing or cut all the diamond wire and rewire manually), this solution also provides advantages in handling wire breakage: when it is necessary to reconnect the broken wire, the control spacing adjustment component moves the fixed pin 17 on the transmission belt 6 to the broken wire position, the wire end on the inlet side is fixedly connected to the fixed pin 17 on the transmission belt 6, the groove of the roller 2 behind the broken wire is wired, and the take-up wheel also works at the same time to take up the rear part of the broken wire. When the wire groove behind the broken wire is completely filled, the wire end can be pulled out to the take-up wheel side for welding, which greatly improves the convenience of welding and the recovery time of the whole machine.

[0020] Wiring time and wire breakage handling time have always been important indicators affecting cutting efficiency. This solution can shorten the wiring and wire breakage handling time to the minute level. At the same time, it has a simple structure and is easy to install. It can be used to upgrade and optimize existing multi-line processing equipment, greatly improving the production efficiency of old equipment.

[0021] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. An automatic threading and winding mechanism, comprising a cutting frame (1) and four sets of rollers (2) arranged circumferentially around the cutting frame (1), characterized in that, Also includes: The bow-shaped bracket (5) is provided in two sets, which are arranged in opposite directions on both sides of the roller (2). Each bow-shaped bracket (5) has pulleys (11) at both ends, and a transmission belt (6) is provided between the pulleys (11) and around the roller (2). Fixed needle (17), the fixed needle (17) is located on one side of the travel track of the transmission belt (6) and is used to pull the diamond wire around the roller (2) for circumferential wiring; The spacing adjustment component is located on at least one side of the bow-shaped bracket (5) and is used to drive the fixed needle (17) to move axially along the roller roller (2), so that the fixed needle (17) pulls the diamond wire to run around the wire groove of the current roller roller (2) once, and then pushes the diamond wire to run in the next set of wire grooves.

2. The automatic threading and winding mechanism according to claim 1, characterized in that, One end of one of the bow-shaped brackets (5) is provided with a second motor (10) near the pulley (11). The output shaft of the second motor (10) is provided with a drive gear (12), and one end of the central shaft of the pulley (11) is provided with a driven gear (13). The drive gear (12) and the driven gear (13) are meshed and connected.

3. The automatic threading and winding mechanism according to claim 1, characterized in that, The belt surface of the transmission belt (6) is provided with a fixing plate (16), wherein a fixing needle (17) is fixedly connected to one side of the fixing plate (16), and a photoelectric sensor (15) is fixedly connected to the other side of the fixing plate (16), and a photoelectric sensor (14) installed on the bow-shaped bracket (5) is provided on the travel trajectory of the photoelectric sensor (15).

4. The automatic threading and winding mechanism according to claim 1, characterized in that, The spacing adjustment assembly has two sets, respectively located on both sides of the two sets of bow-shaped brackets (5), wherein the spacing adjustment assembly includes: The lead screw (4) is located in the middle of the bow-shaped support (5) and acts on the propulsion movement of the bow-shaped support (5); The guide rail (3) has two sets, which are respectively located at both ends of the bow-shaped bracket (5) and act as a guide for the movement of the bow-shaped bracket (5).

5. An automatic threading and winding mechanism according to claim 4, characterized in that, The bow-shaped bracket (5) is provided with a thread sleeve (9) that is compatible with the lead screw (4) in the middle, and a first motor (7) is provided at one end of the lead screw (4) and mounted on the cutting frame (1).

6. The automatic threading and winding mechanism according to claim 4, characterized in that, The bow-shaped bracket (5) has slides (8) at both ends that are adapted to the guide rail (3).

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